NOTES AND ABSTRACTS. 



355 



method of application in certain cases left something to be desired. The 

 experiments had been in progress about two years. — F. J. C. 



Tobacco, Wilt Disease of. By R. E. B. M'Kenney (U.S.A. Dep. 

 Agr. Bur. PI. Ind. Bull. 51; 1 fig.).— A short note on the "wilt" 

 disease in tobacco, which is still under observation, but which has been 

 already proved to be of a highly infectious nature, and to be produced by 

 the presence in the woody parts and stem of a fungus belonging to the 

 genus Fusarium (Neocosmospora). 



It is advised that land which has produced an infected crop should 

 be rested for at least five years ; all diseased plants should be burnt on the 

 spot ; all tools and ploughs used among them should be cleaned with soap 

 and water before removal to other places ; and even the destruction of barns 

 and manure sheds in which any infected tobacco has been stored is 

 recommended. 



No fertiliser containing kainit or muriate of potash should be used, 

 and in soils deficient in lime an application of fifty bushels to the acre 

 may prove advantageous, though this must be used with care , as too much 

 lime causes the leaf to burn poorly. — M. L. H. 



Tomato Diseases in California. By R. E. Smith (U.S.A. Exp. 

 Stn. California, Bull. 175, 1906 ; 8 figs.). — The diseases treated of are : 



1. "Damping off," soil sterilisation being the means of prevention 

 suggested. Seed-beds should be made of fresh soil, the seed sown thinly, 

 and the surface of the soil kept dry after seedlings appear ; a sprinkling 

 of air-slaked lime aiding this. 



2. "Summer blight," often causing great havoc and apparently 

 caused by a species of Fusarium. The symptoms are very similar to 

 those of the disease known as "sleepy disease of tomatoes." Experi- 

 ments are in progress with this disease. 



3. "Winter blight," caused by Phytophthora infestans, is very 

 prevalent on leaf and fruit in the damper days of the winter, and the use 

 of Bordeaux mixture is strongly recommended. — F. J. C. 



Tomato Forcing-. By W. J. Green and C. W. Waid (U.S.A. 

 Agr. Exp. Shi. Ohio, Bull. 153, August 1904 ; illustrated). — A list of the 

 results in connection with forcing tomatoes as a spring and early 

 summer crop in Ohio. The crop is a profitable one, and with due 

 attention to a few essential points, such as hand pollination, temperature, 

 sub-irrigation and mulching, not difficult to secure. 



The best results are given by plants trained to one stem, and set one 

 foot apart. Seed is sown December 1, plants put out in beds middle of 

 March, and the fruit is beginning to ripen about June. The average 

 yield was one and two pounds per square foot, and average price 12 cents 

 per pound. The white fly was the most troublesome pest ; remedy, fumi- 

 gation with hydrocyanic gas. — G. H. C. 



Tomatoes. By L. C. Corbett (U.S.A. Dep. Agr. Farmers' Bull. 

 220, 1905 ; illustrated). — The tomato is an important article of commerce 

 in America, and is here considered (1) as a field crop in the North, i.e. 

 east of the Mississippi and north of Washington ; (2) in the Southern 



